package Collection.Map;

import java.util.HashMap;
import java.util.Map;

/**
 * @description:
 * @author: cyy
 **/
public class map_put {
    public static void main(String[] args) {
        Map<String, Object> params = new HashMap();
        params.put("1","cyy");
        params.put("2","cyy");
        System.out.println("shitutuya:"+params.size());
    }
}
